package com.jly.edu.config;

import com.jly.edu.security.filters.CaptchaFilter;
import com.jly.edu.security.handles.JwtAccessDeniedHandler;
import com.jly.edu.security.handles.JwtLogoutSuccessHandler;
import com.jly.edu.security.handles.LoginFailureHandler;
import com.jly.edu.security.handles.LoginSuccessHandler;
import com.jly.edu.security.jwt.JwtAuthenticationEntryPoint;
import com.jly.edu.security.jwt.JwtAuthenticationFilter;
import com.jly.edu.security.service.UserDetailsServiceImpl;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.config.http.SessionCreationPolicy;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;

@Configuration
@EnableWebSecurity
@EnableGlobalMethodSecurity(prePostEnabled = true)
public class SecurityConfig extends WebSecurityConfigurerAdapter {

	@Autowired
    private LoginFailureHandler loginFailureHandler;
	@Autowired
    private LoginSuccessHandler loginSuccessHandler;

	@Autowired
    private JwtLogoutSuccessHandler jwtLogoutSuccessHandler;

	@Autowired
    private JwtAuthenticationEntryPoint jwtAuthenticationEntryPoint;
	@Autowired
    private JwtAccessDeniedHandler jwtAccessDeniedHandler;

	@Autowired
    private CaptchaFilter captchaFilter;
	@Autowired
    UserDetailsServiceImpl userDetailsService;


    // jwt 过滤器
    @Bean
    JwtAuthenticationFilter jwtAuthenticationFilter() throws Exception {
        JwtAuthenticationFilter filter = new JwtAuthenticationFilter(authenticationManager());
        return filter;
    }
    @Bean
    BCryptPasswordEncoder bCryptPasswordEncoder(){
        return new BCryptPasswordEncoder();
    }

	private static final String[] URL_WHITELIST = {

			"/login",
			"/logout",
			"/captcha",
			"/favicon.ico",

	};


	protected void configure(HttpSecurity http) throws Exception {

		http.cors().and().csrf().disable()

				// 登录配置
				.formLogin()
				.failureHandler(loginFailureHandler)
                .successHandler(loginSuccessHandler)

                .and()
                .logout()
                .logoutSuccessHandler(jwtLogoutSuccessHandler)
				// 禁用session
				.and()
				.sessionManagement()
				.sessionCreationPolicy(SessionCreationPolicy.STATELESS)

				// 配置拦截规则
				.and()
				.authorizeRequests()
				.antMatchers(URL_WHITELIST).permitAll()
				.anyRequest().authenticated()

                // 异常处理器
                .and()
                .exceptionHandling()
                .authenticationEntryPoint(jwtAuthenticationEntryPoint)
                .accessDeniedHandler(jwtAccessDeniedHandler)

				// 配置自定义的过滤器
				.and()
                .addFilter(jwtAuthenticationFilter())
				.addFilterBefore(captchaFilter, UsernamePasswordAuthenticationFilter.class)
		;

	}

    @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
       auth.userDetailsService(userDetailsService);
    }
}
